1. (1) Sunburn is skin damage caused by the sun’s ultraviolet rays. (2) (Ultraviolet rays do not penetrate glass; consequently, we cannot get sunburned from sunlight shining through a closed window.) (3) When ultraviolet rays destroy skin cells, an increased amount of blood flows to the area, bringing new cells and other repair materials. (4) The red of sunburn results from this increased blood flow. (5) Sunburn hurts nerve endings in the skin send pain signals in response to cell damage.

Click to read the passage from "lifeboat ethics," by garrett hardin. then answer the question. what is the author's purpose for including the following example in his argument against rich nations poor nations? a. he wants to explain why more nations need to invest in "miracle" crops. b. he wants to disprove the idea that poor nations will eventually be able to support themselves. c. he wants to prove that the green revolution is the best use of people's money. d. he wants to show a solution to poverty that he believes can actually work.

When lawrence saw the posters for the circus hanging on the bulletin board, as he swept up the trimmings at slim's barbershop, he knew he would be taking his little cousins. they loved animals, and he was looking forward to seeing the smiles on their faces as the circus performers amazed them with their stunts. but sweeping up hair clippings didn't pay a whole lot. lawrence spent 45 dollars just getting tickets. but it was worth it to see his cousins' faces. the day finally came and everyone was excited as they walked into that big circus tent. but lawrence soon realized that he and his cousins would be thirsty and hungry. as they sat in their seats, the drink vendor walked by selling beverages. desperately thirsty, lawrence asked him how much a lemonade would cost, and the drink vendor said, "eleven dollars each." lawrence replied, "oh, that's it? just eleven dollars? what a great deal for one cup of lemonade. that's totally worth it." the drink vendor walked away. which type of irony is used?

In this excerpt, romeo’s reaction to light illustrates his tiring work schedule. budding romance. gloomy mood. religious faith.